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Topic: Think I need a wiring schematic! (Read 1550 times) previous topic - next topic

Think I need a wiring schematic!

I oopsed and hooked up a battery badly, fried something and now she won't start.  Does anyone have access to the wiring schematic for an '84 Turbocoupe????

Thx

Think I need a wiring schematic!

Reply #1 –
You fry the starter selniod thats a cheap part unless you go to the ford house other than that i never messed up anything rehooking up my battery.
[SIGPIC][/SIGPIC]


http://www.cardomain.com/id/Carpimp1987
1987 T-Bird AEROBIRD-GT had many many mods but is now totaled and is the car that made me want to start customizing everything all over again.
1988 T-Bird 5.0 HO DD/Sleeper/next project car :birdsmily:
1988 Cougar XR7 5.0 HO Vortech Supercharged being bulit right now :cougarsmily:

Think I need a wiring schematic!

Reply #2 –
starter solenoid isn't it.  there was some "unconventional" re-wiring done to this bird, now we have to go through and find out what happened and where, one circuit at a time.

anyone know where a schematic diagram can be located???

Thanks.

Think I need a wiring schematic!

Reply #3 –
Quote from: tdc84birdman;205638
I oopsed and hooked up a battery badly, fried something and now she won't start.  Does anyone have access to the wiring schematic for an '84 Turbocoupe????

Thx


Yes I have all the dospoogeentation for '84 T-Bird.

Do you mean you hooked the battery up backwards?

Does "won't start" mean won't crank or cranks but won't start?

Reversing the battery polarity will damage electronic parts like diodes and transisters.

When you turn the ignition to RUN can you hear the fuel pump run for a second or two and then shut off? This indicates the EEC  computer is running like it should.
If it doesn't run or runs continuously, the EEC may be broke.

Things that may be zapped: EEC, TFI, MAP, arc suppression diodes and radio.

Think I need a wiring schematic!

Reply #4 –
I've got a bunch of diagrams here, don't know if the ones you'll need are there tho...
2015 Mustang GT Premium - 5.0, 6-speed, Guard Green - too much awesome for one car

1988 5.0 Thunderbird :birdsmily: SOLD SEPT 11 2010: TC front clip/hood ♣ Body & paint completed Oct 2007 ♣ 3.55 TC rear end and front brakes ♣ TC interior ♣ CHE rear control arms (adjustable lowers) ♣ 2001 Bullitt springs ♣ Energy suspension poly busings ♣ Kenne Brown subframe connectors ♣ CWE engine mounts ♣ Thundercat sequential turn signals ♣ Explorer overhead console (temp/compass display) ♣ 2.25" off-road dual exhaust ♣ T-5 transmission swap completed Jan 2009 ♣

Think I need a wiring schematic!

Reply #5 –
my diy link below has a bunch of diagrams as well.  the start circuit is pretty easy to follow and is similar to the v6 and v8.

Think I need a wiring schematic!

Reply #6 –
Softtouch,

yes, I hooked it up backwards

it cranks but will not start - no juice to the fuel injectors


Thanks, Thunderchicken I used your schematics because I could print them off. 

Next question for anyone.  I have an '85 parts car and was wondering if I swapped it's five speed manual tranny (I never have liked my stock automatic) will I need to also swap the rear end??  Any advice for doing that?  (swapping 85 to 84 transmission).

Think I need a wiring schematic!

Reply #7 –
I think all 83-86 Turbo Coupes used the 3.45 traction lock 7.5" rear. You shouldn't need to change it. You'll probably need the driveshaft from the T5 car tho...
2015 Mustang GT Premium - 5.0, 6-speed, Guard Green - too much awesome for one car

1988 5.0 Thunderbird :birdsmily: SOLD SEPT 11 2010: TC front clip/hood ♣ Body & paint completed Oct 2007 ♣ 3.55 TC rear end and front brakes ♣ TC interior ♣ CHE rear control arms (adjustable lowers) ♣ 2001 Bullitt springs ♣ Energy suspension poly busings ♣ Kenne Brown subframe connectors ♣ CWE engine mounts ♣ Thundercat sequential turn signals ♣ Explorer overhead console (temp/compass display) ♣ 2.25" off-road dual exhaust ♣ T-5 transmission swap completed Jan 2009 ♣

Thanks to all...

Reply #8 –
Thanks for the info, driveshaft yes, rear end not so much!

Hope to get this thunderbird back on the road soon!

TDC

Think I need a wiring schematic!

Reply #9 –
If you tried to start it with the battery backwards you probably zapped the arc suppression diode for the starter solenoid.
The arcing will burn up a contact in the ignition switch.

There are two wires on the ignition switch start terminal of the starter solenoid. One of them goes to a diode that is grounded to the chassis. Check it with your OHM meter.

didn't crank it

Reply #10 –
I hooked it up and was getting ready to start it, when I noticed some smoke.  Realizing that I had fugged up, I did not turn the ignition over and immediately got the battery cables switched to the proper polarity.  Unfortunately, after that it would not start.  My EEC is not damaged (the fuel pump runs for a couple seconds and shuts off when the ignition is ON).  Fuel injection is no workee, tho!

May get it figgered out today or later this weekend - then I can start tearing apart my parts car for its five speed goodies.

Think I need a wiring schematic!

Reply #11 –
The fuel pump turning on and off shows that the software in the EEC is running. It could still be damaged though.
Try pulling codes and see what you get.
Can you swap in the EEC and TFI from your parts car?
 

Think I need a wiring schematic!

Reply #12 –
Other stuff you may have zapped are the voltage regulator and the alternator.